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Finding the Fourth Proportional to 99,332.25, 137,078.51 and 54,620.25

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Solution

The fourth proportional to 99,332.25, 137,078.51 and 54,620.25 is: 75,375.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,332.25 : 137,078.51 = 54,620.25 : x
  2. Step 2: Convert to fraction form
    99,332.25/137,078.51 = 54,620.25/x
  3. Step 3: Cross multiply
    99,332.25x = 137,078.51 × 54,620.25
  4. Step 4: Simplify right side
    99,332.25x = 7,487,262,212.73
  5. Step 5: Solve for x
    x = 7,487,262,212.73/99,332.25
  6. Step 6: Final answer
    x = 75,375.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.